<attrs/input/>
<const/{ c, d }=input/>

<div class=["a", { b: c, d }]/>
<div class=["a", false, "b"]/>
<div class="a b c"/>

<custom-tag class=["a", { b: c, d }]/>
<custom-tag class=["a", false, "b"]/>

<${input.test} class=["a", { b: c, d }]>
  <@test class=["a", { b: c, d }]>Hello</@test>
</>